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Vector meteor problem

  1. Sep 20, 2008 #1
    1. The problem statement, all variables and given/known data

    A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.40 km, and 1.10 s later its has moved to point B with coordinates (6.12 km, 0.900 km).

    Find the magnitude of its average velocity between these two points

    2. Relevant equations

    none really

    3. The attempt at a solution

    I found the vx to be 0.473 km/s and vy to be -0.455 km/s. From this I took average velocity of the magnitude to be y/x to be -0.455/0.473. But the answer is wrong. Am I on the right track or am i doing it completely wrong? Please Help! Thanks
  2. jcsd
  3. Sep 20, 2008 #2
    "From this I took average velocity of the magnitude to be y/x to be -0.455/0.473"

    Not sure what this...

    Anyway, given the components vx and vy you have, the magnitude of this vector, and thus the average speed, is

    vav = sqrt((vx)^2 + (vy)^2)
  4. Sep 20, 2008 #3
    haha thanks, i figured it out that i was way off and should have used the pathagerom therom. thank you for the help anways!
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